iPhone upgrading to 6.0, worth it?

so i have a iphone 3gs 5.1.1, that I jailbroke and unlocked with . I'm not too experienced with this stuff, but I was just checking to see if upgrading to the 6.0 ios will mess up or brick my iphone somehow? The main reason I'm wanting to upgrade is that I have stopped receiving group texts from ppl since the iphone upgrade came out, and I think that's the reason.

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